Internal-combustion engine.



G. H. STONE, DECD. m. n. STONE.. Aommsrnnmx. IN''ERMI. COMBUSTION ENGINE.

APPLIcATmN mio JUNE 21, 1917. 1,25,959

Patented Mar. 12,1918.

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Deceased WITNESSES ATTORNEY man... ..mzwn www, v

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@giran eterne artnr enr-ien lf GEORGE H. STONE, DECEASED, LATE OF COLORAID SPRNGS, COLORADO, BY MARY H.

STONE, ADMINISTRATRIX, OF COLOR/ADO SFRNGS, COIJQIRADC).v

' rn'rnnnnL-oci/rnnsrron ENGINE.

Specication of Letters Patent.

Patented Mar., 172, 1918.

Application tiled June 27, 1917. Serial No. 177,397.

To all whom it may concern.'

Be it known that GEORGE H. STONE, deceased, late a resident of the United States, at Colorado Springs, in the county of El Paso and State of Colorado, has invented certain new and useful Improvements in Internal-Combustion Engines, of which the following is the specification.

This invention relates to internal coinbustion engines and more particularly to an internal combustion engine provided with steam generating and cylinder cooling means.

One of the main objects of the invention is to provide an engine ot simple construction and operation in which the heat generated during the operation of the engine may be utilized to produce steam which may be used for operating a steam engine of suitable construction. A further object is to provide simple and etlicient means whereby the heat radiated by the engine cylinder may be used to generate steam, means being also provided whereby the hot exhaust gases may be caused to iiow through the water chamber about the cylinder so as to assist in the steam generation. A. still Jturther object is to provide means whereby the exhaust gases from the engine cylinder may be used to preheat the feed water for the water chamber and caused to subsequently flow through the water chamber so as to assist in the generating of steam. Further objects will appear from the detailed description.

In the drawings Figure 1 is a transverse central vertical sectional view taken through an internal combustion engine of standard construction with a cooling and steam generating means constructed in accordance with my invention applied.

Fig. 2 is a section taken substantially on line 2-2 of Fig. 1.

The engine crank-shaft 1 is rotatably supported in the crank case 2 and is connected by the rod 3 and wrist pin 4 to the piston 5 in the usual manner. Piston 5 operates in the cylinder 6 adjacent the upper end of which is provided the ignition device 7 of a standard type used in low tension circuits. The cylinder 6 is provided with a by-pass 8 having the upper opening 9 and the lower opening 10 communicating directly with the The piston 5 is provided, with a passageway or duct llin its head which communicates with an opening 12 through the side of the piston. A suitable intake opening 13a is provided in the crank-case. On its upward stroke the piston compresses the explosive mixture in the upper end of the cylinder and simultaneously draws a new charge into the lower part of the cylinder and thecrank-case. On the explosion stroke the new charge is compressed and flows through the passage 11 of the piston head and the by-pass of the cylinder into the cylinder above the piston, being deflected in an upward direction by the baftie plate 13. The hot gases from the ex'- plosion are simultaneously expelled from the cylinder through an exhaust conduit 14. This construction and operation is standard and need not be further described in detail.

The cylinder 6 is provided with a plurality of radiating ribs or tins 6a. An inner casing l5 is mounted concentric with, andin spaced relation to, cylinder 6. This casing is provided at each end with an outwardly directed annular flange these flanges being secured to the extended flange 16 of the cylinder head 17 and the downwardly and inwardly inclined base plate 18 mounted about thebas'e ot' the cylinder, respectively7 by nut and bolt means,y suitable packing rings or gaskets being interposed between the flanges of the casing and the base ring and flange of' the cylinder head so as to insure a fluid-tight closure between these elements. An outer casing 19 is mounted concentric with inner casing l5 being provided with upper and lower flanges and secured between the base plate 18 and the flange 16 of cylinder head 17. This outer casing is provided with a cover 20 of asbestos or any other suitable heat insulating material secured. in place by the usual straps 21. The cylinder 6 and inner casing -15 coperate to form a water chamber 22 surrounding the cylinder'. The outer casing 19 and inner casing 15 coperate in a similar manner to provide an exhaust chamber 23. A feed water pipe 24 extends into the exhaustchamber 23 at a point adjacent the upper end thereof and is coiled to kform a plurality of superposed convolutions 24C@ whichv are mounted in superposed relation within the exhaust chamber concentric with casing l5, these convolutions extending substanltiallythe full length of the outercasinglf).

lower end of pipe 241: inserted through the casing l5 so as to communicate with the water chamber 23, adjacent the lower end thereof, as at 24?. The feed water which may be forced through pipe 24 by means of the usual pump or the equivalent enters the water chamber after flowing through the convolutions 2da. During its flow through Vthese convolutions this water is subjected to the action of the heated exhaust gases from the cylind r which are discharged into exhaust chamber 23 adjacent the lower end thereof from the exhaust conduit 11i which extends across the water chamber and through the casing 15, the outer arm of .this conduit being directed dO-.'\.Yn\vardly for this purpose as shown. The hot exhaust gases as they are discharged into the exhaust chamber rise and How over and about the convolutions of the feed wat-er pipe thus serving to heat the feed water to a relatively high temperature preliminary to its .entrance into the water chamber.

A pipe 25 is mounted in thel water chamber being coiled to provide a plurality of superposed convolutions 25a mounted in superposed relation and concentric with, and closely adjacent, the cylinder 6. This exhaust pipe conununicates at its upper end with the exhaust chamber as at 25h and at lits lower end discharges into'the atmosphere as at 25C.

The base plate 18 together with the cylinder head 6 and the inner .casing l5 and outer casing 19, forms a unit which may be applied to an internal combustion engine of standard construction. T he casings maybe easily fitted about a cylinder the base plate 18 being secured to the base flange 6a of the cylinder by nut and bolt means, a suitable packing ring or gasket being interposed between the cylinder base flange and the base plate. This generating appliance is more particularly intended to be used in connection with stationary internal combustion engines such as marine engines, or other high power engines of comparatively heavy construction. `When the engine is in open ation, a large per cent. of the heat. generated will be readily absorbed by the 'water contained in water chamber 22. "fn practice, this water chamber will be substantially three fourths full of water, the water level being at approximately line m-m of l of the drawings. The hot exhaust gases flow through the discharge conduit 11i into the exhaustchamber 23. rThis chan'iber is made suficiently large to per ait expansion of these gases so that they will flow comparatively slowly toward the upper endof the exhaust chamber, passing over and about the'convolutions of the feed water pipe during their upward movement. is the exhaust gases thus move slowly about the feed water 'pipe in direct Contact therewith the greater part of the heat contained in these.

gases will be absorbed by the water in the convolutions 24eL so that this ,water will `be raised to a comparatively high temperature preliminary toits entering "into the water chamber, the exhaust gases and the convolutions of the feed water pipe thus actingin thecapacity of a preheater. lNhen theexhaust'gases reach the upper end of the exhaust vchamber 4they will iiow through tl e convolutions of the exhaust pipe 25 s o that the heat contained by these gases after vpassing over the coils ofthe feed water pipe will be extracted largely by the water 1in the water chamber after which the exhaust gases will be discharged into the-atmosphere. ln practice the lengths of the various pipe coils would be so proportioned that the vgases discarged would L'be at approximately fthe same temperature as Vthe water in the-water chamber, or but a few degrees higher. y'By thus arranging the water chamber and the exhaust chamber, and the pipe coils contained in these two chambers, by far the greater percentage of the heat generated by the engine during its operation is utilized thus eliminating the great waste of energy attendant upon the use ofl an internal combustion engine not provided with mea-ns whereby the heat generated by the engine may be utilized for generating steam.' in addition, this insures ythat the engine cylinder will be suliiciently cooled toeifectually eliminate all danger of premature explosion of the explosive mixture, or injury to :the engine from excessive heating. After lthe engine has been operated for a comparatively short time the water within the water chamber v22 will be heated to a suiiiciently high degree to generate steam which will collect in the upper portion of the water chamber, this steam bein-g conducted away by the steam pipe 26 which communicates with the water chamber at ythe upper end thereof, this steampipe also communicating with a suitable engine or the equivalent in which the steam generated may be used.

ltlhat l claim is Y 1. ln internal combustion engines, a cylinder, an inner casing mounted about said cylinder in spaced relation thereto so as to form a water chamber surrounding the .cyli-nder, an outer .casing mounted about said inner casing in spaced relation thereto so as to form an exhaust chamber about the inner casing, a feed-water pipe communicating with said water chamber adjacentthe lower end thereof'and provided with a plurality of superposed convolutions mounted in said exhaust chamber, an exhaust pipe mounted within the water chamber and having a plu- 'ality of superposed .convolu-tions, said ex- 'haast pipe. communicating at its upper end with said exhaust chamber, and an ,exhaust conduit communicating with the interior of .said .cylinder and with the exhaust chamber 2. In internal combustion engines, a cylinder, an inner casing mounted concentric with, and in spaced relation to, the cylinder and cooperating therewith to form an annular water chamber surrounding the cylinder, an outer casing concentric with, and in spaced relation to, said inner casing and cooperating therewith to form an exhaust chamber surrounding said inner casing, a feed-water pipe communicating at its lower end with the water chamber adjacent the lower end thereof and coiled to provide a plurality of superposed convolutions mounted in the exhaust chamber7 a coiled exhaust pipe mounted within the water chamber and communicating with the exhaust cham- Copefs o2 this patent may be obtained for ve cents each, by addressing the Commissioner of Eatenta, i

ber at the upper end thereof, at its upper end, and with the atmosphere at its lower end, and an exhaust conduit passed through the water chamber and communicating at one end with the interior of the cylinder, said conduit discharging into the exhaust chamber adjacent the lower end thereof.

In testimony whereof I alix my signature in presence of two witnesses.

GEORGE H. STONE, By MARY H. STONE, Admz'mfstmtrz'x of the estate of George H.

Stone, deceased. Witnesses:

O. E. CHAPLIN, J. A. MORRISON.

Washington, D. C. 

